路基挡墙黏性土主动土压力计算误差分析——以某二级公路挡墙为例  

Analysis on Calculation Error of Active Earth Pressure of Cohesive Soil for Roadbed Retaining Wall

作　　者：吴锐 胡定波 

机构地区：[1]浙江省交通规划设计研究院,浙江杭州310006 [2]台州市黄岩区交通运输局,浙江台州318020

出　　处：《城市道桥与防洪》2017年第9期196-197,206,共3页Urban Roads Bridges & Flood Control

摘　　要：对某二级公路路肩式挡墙墙背黏性土主动土压力采用了常见的两种方法计算,即经典库伦理论的等效内摩擦角法和力多变形法。计算结果表明,这两种方法计算出来的该挡墙的抗滑动稳定系数误差达到33.4%,并且,随着墙高的增加,误差增加很快。因此,在设计高墙时,应酌情降低D,在计算黏性土的主动土压力时,最好是按照实际测定的c、值,采用力的数解法计算。The active earth pressure of cohesive soil at the back of roadbed retaining wall for a Class 2highway is calculated by two common methods of equivalent internal friction angle method and force multi deformation method in the classics coulomb theory. The calculation result shows that the anti-slide stability coefficient error of this retaining wall calculated by these two methods is 33.4%, and the error will quickly increase with the increment of wall height. Therefore, the value of φD will be reduced according to the circumstances during the design of high wall. The calculation of active earth pressure of cohesive soil will be better on the practically measured the values of c and φ. The solution to the fore is used for the calculation.

关 键 词：路基挡墙 黏性土 主动土压力计算 抗滑动稳定系数 

分 类 号：U416.1[交通运输工程—道路与铁道工程]